Tweaks ai escape_captivity behavior (#94224)

## About The Pull Request

Now: AI will break chairs they're buckled in
After PR: Ai will prefer to resist out of chairs if possible

Fixes #94222 , partially

Really I think this shouldn't be a subtree, orrrrr if it is it should be
enabled by combat.
It's weird that buckling a pet into a pet bed encourages them to get up
ASAP.
If a mob is completely docile or otherwise not trying to act, they
shouldn't freak out and break whatever they're sat in.

Alternatively pets need a behavior for seeking out a bed (but that's
more effort)

## Changelog

🆑 Melbert
fix: AI mobs will prefer to resist out of simple buckles (like being sat
in a chair or bed) rather than try to break the chair.
/🆑

code/game/objects/structures/beds_chairs/alien_nest.dm

@@ -15,6 +15,10 @@
 	can_deconstruct = FALSE
 	var/static/mutable_appearance/nest_overlay = mutable_appearance('icons/mob/nonhuman-player/alien.dmi', "nestoverlay", LYING_MOB_LAYER)
 
+/obj/structure/bed/nest/Initialize(mapload)
+	. = ..()
+	ADD_TRAIT(src, TRAIT_DANGEROUS_BUCKLE, INNATE_TRAIT)
+
 /obj/structure/bed/nest/add_context(atom/source, list/context, obj/item/held_item, mob/living/user)
 	if(held_item?.tool_behaviour == TOOL_WRENCH)
 		return NONE

code/game/objects/structures/kitchen_spike.dm

@@ -78,6 +78,7 @@
 /obj/structure/kitchenspike/Initialize(mapload)
 	. = ..()
 	register_context()
+	ADD_TRAIT(src, TRAIT_DANGEROUS_BUCKLE, INNATE_TRAIT)
 
 /obj/structure/kitchenspike/examine(mob/user)
 	. = ..()